On horseback through Nigeria; or, Life and travel in the central SudanFalconer, John Downie. · First published 1911Open the Tome
La formacion de Gondwana en el nordeste del UruguayFalconer, John Downie. · First published 1937Open the Tome
The Gondwana system of north eastern UruguayFalconer, John Downie. · First published 1937Open the Tome
The southern plateau tinfields and the Sura volcanic lineFalconer, John Downie. · First published 1926Open the Tome
The geology and geography of Northern NigeriaFalconer, John Downie. · First published 1911Open the Tome
